Merge branch 'master' into func_resolver

Conflicts:
	functions.cpp

color_names.hpp

@@ -153,7 +153,7 @@ namespace Sass {
 		"yellowgreen",
 		// sentinel value
 		0
-	}
+	};
 
 	const double color_values[] =
 	{
@@ -306,6 +306,6 @@ namespace Sass {
 		0x9a, 0xcd, 0x32,
 		// sentinel value
 		0xfff
-	}
+	};
 
 }
\ No newline at end of file

context.cpp

 #include "context.hpp"
+#include <cstring>
 #include <iostream>
 #include <unistd.h>
 #include "prelexer.hpp"
+#include "color_names.hpp"
 using std::cerr; using std::endl;
 
 namespace Sass {
@@ -40,19 +42,28 @@ namespace Sass {
     // }
   }
   
-  Context::Context(const char* paths_str)
+  Context::Context(const char* paths_str, const char* img_path_str)
   : global_env(Environment()),
     function_env(map<string, Function>()),
     extensions(multimap<Node, Node>()),
     pending_extensions(vector<pair<Node, Node> >()),
     source_refs(vector<char*>()),
     include_paths(vector<string>()),
+    color_names_to_values(map<string, Node>()),
+    color_values_to_names(map<Node, string>()),
     new_Node(Node_Factory()),
+    image_path(0),
     ref_count(0),
     has_extensions(false)
   {
     register_functions();
     collect_include_paths(paths_str);
+    setup_color_map();
+
+    string path_string(img_path_str ? img_path_str : "");
+    path_string = "'" + path_string + "/'";
+    image_path = new char[path_string.length() + 1];
+    std::strcpy(image_path, path_string.c_str());
   }
   
   Context::~Context()
@@ -60,7 +71,7 @@ namespace Sass {
     for (size_t i = 0; i < source_refs.size(); ++i) {
       delete[] source_refs[i];
     }
-
+    delete[] image_path;
     new_Node.free();
     // cerr << "Deallocated " << i << " source string(s)." << endl;
   }
@@ -148,6 +159,23 @@ namespace Sass {
     register_function(comparable_descriptor, comparable);
     // Boolean Functions
     register_function(not_descriptor, not_impl);
+    register_function(if_descriptor, if_impl);
+  }
+
+  void Context::setup_color_map()
+  {
+    size_t i = 0;
+    while (color_names[i]) {
+      string name(color_names[i]);
+      Node value(new_Node("[COLOR TABLE]", 0,
+                          color_values[i*3],
+                          color_values[i*3+1],
+                          color_values[i*3+2],
+                          1));
+      color_names_to_values[name] = value;
+      color_values_to_names[value] = name;
+      ++i;
+    }
   }
   
 }

context.hpp

@@ -47,20 +47,24 @@ namespace Sass {
     vector<pair<Node, Node> > pending_extensions;
     vector<char*> source_refs; // all the source c-strings
     vector<string> include_paths;
+    map<string, Node> color_names_to_values;
+    map<Node, string> color_values_to_names;
     Node_Factory new_Node;
+    char* image_path;
     size_t ref_count;
-    string sass_path;
-    string css_path;
+    // string sass_path;
+    // string css_path;
     bool has_extensions;
 
     void collect_include_paths(const char* paths_str);
-    Context(const char* paths_str = 0);
+    Context(const char* paths_str = 0, const char* img_path_str = 0);
     ~Context();
     
     void register_function(Function_Descriptor d, Primitive ip);
     void register_function(Function_Descriptor d, Primitive ip, size_t arity);
     void register_overload_stub(string name);
     void register_functions();
+    void setup_color_map();
   };
 
 }

document.cpp

@@ -5,6 +5,7 @@
 #include "error.hpp"
 #include <iostream>
 #include <sstream>
+#include <sys/stat.h>
 
 namespace Sass {
 
@@ -30,28 +31,28 @@ namespace Sass {
   {
     std::FILE *f;
     const char* path_str = path.c_str();
-    f = std::fopen(path_str, "rb");
-    if (!f) {
-      string path_with_extension(path + ".scss");
-      f = std::fopen(path_with_extension.c_str(), "rb");
-      if (!f) {
-        const char* file_name_str = Prelexer::folders(path_str);
-        string path_with_underscore(Token::make(path_str, file_name_str).to_string() +
-                                    "_" +
-                                    Token::make(file_name_str).to_string());
-        f = std::fopen(path_with_underscore.c_str(), "rb");
-        if (!f) {
-          string path_with_underscore_and_extension(path_with_underscore + ".scss");
-          f = std::fopen(path_with_underscore_and_extension.c_str(), "rb");
-          if (!f) throw path;
+    struct stat st;
+    string tmp;
+    if (stat(path_str, &st) == -1 || S_ISDIR(st.st_mode)) {
+        tmp = path + ".scss";
+        path_str = tmp.c_str();
+        if (stat(path_str, &st) == -1 || S_ISDIR(st.st_mode)) {
+            const char *full_path_str = path.c_str();
+            const char *file_name_str = Prelexer::folders(full_path_str);
+            tmp = Token::make(full_path_str, file_name_str).to_string() +
+                  "_" +
+                  string(file_name_str);
+            path_str = tmp.c_str();
+            if (stat(path_str, &st) == -1 || S_ISDIR(st.st_mode)) {
+                tmp = tmp + ".scss";
+                path_str = tmp.c_str();
+                if (stat(path_str, &st) == -1 || S_ISDIR(st.st_mode))
+                    throw path;
+            }
         }
-      }
     }
-    if (std::fseek(f, 0, SEEK_END)) throw path;
-    int status = std::ftell(f);
-    if (status < 0) throw path;
-    size_t len = status;
-    std::rewind(f);
+    f = std::fopen(path_str, "rb");
+    size_t len = st.st_size;
     char* source = new char[len + 1];
     size_t bytes_read = std::fread(source, sizeof(char), len, f);
     if (bytes_read != len) {
@@ -61,10 +62,12 @@ namespace Sass {
     source[len] = '\0';
     char* end = source + len;
     if (std::fclose(f)) throw path;
+    const char *file_name_str = Prelexer::folders(path_str);
+    string include_path(path_str, file_name_str - path_str);
 
     Document doc(ctx);
     doc.path        = path;
-    doc.line = 1;
+    doc.line        = 1;
     doc.root        = ctx.new_Node(Node::root, path, 1, 0);
     doc.lexed       = Token::make();
     doc.own_source  = true;
@@ -72,6 +75,9 @@ namespace Sass {
     doc.end         = end;
     doc.position    = source;
     doc.context.source_refs.push_back(source);
+    if (!include_path.empty()) {
+      doc.context.include_paths.push_back(include_path);
+    }
 
     return doc;
   }
@@ -136,7 +142,8 @@ namespace Sass {
     // trim trailing whitespace
     if (!retval.empty()) {
       size_t newlines = 0;
-      for (size_t i = retval.length() - 1; i >= 0; --i) {
+      size_t i = retval.length();
+      while (i--) {
         if (retval[i] == '\n') {
           ++newlines;
           continue;

document_parser.cpp

@@ -101,17 +101,16 @@ namespace Sass {
     if (!lex< string_constant >()) throw_syntax_error("@import directive requires a url or quoted path");
     // TO DO: BETTER PATH HANDLING
     string import_path(lexed.unquote());
-    const char* curr_path_start = path.c_str();
-    const char* curr_path_end   = folders(curr_path_start);
-    string current_path(curr_path_start, curr_path_end - curr_path_start);
-    try {
-      Document importee(Document::make_from_file(context, current_path + import_path));
-      importee.parse_scss();
-      return importee.root;
-    }
-    catch (string& path) {
-      throw_read_error("error reading file \"" + path + "\"");
+    for (vector<string>::iterator path = context.include_paths.begin(); path < context.include_paths.end(); ++path) {
+      try {
+        Document importee(Document::make_from_file(context, *path + import_path));
+        importee.parse_scss();
+        return importee.root;
+      }
+      catch (string& path) {
+      }
     }
+    throw_read_error("error reading file \"" + import_path + "\"");
     // unreached statement
     return Node();
   }
@@ -814,14 +813,26 @@ namespace Sass {
       const char* value = position;
       const char* rparen = find_first< exactly<')'> >(position);
       if (!rparen) throw_syntax_error("URI is missing ')'");
-      Token contents(Token::make(value, rparen));
+      Token content_tok(Token::make(value, rparen));
+      Node content_node(context.new_Node(Node::string_constant, path, line, content_tok));
       // lex< string_constant >();
-      Node result(context.new_Node(Node::uri, path, line, contents));
+      Node result(context.new_Node(Node::uri, path, line, 1));
+      result << content_node;
       position = rparen;
       lex< exactly<')'> >();
       return result;
     }
 
+    if (lex< image_url_prefix >())
+    {
+      Node url(parse_value());
+      if (!lex< exactly<')'> >()) throw_syntax_error("call to image-url is missing ')'");
+      Node the_call(context.new_Node(Node::image_url, path, line, 1));
+      the_call << url;
+      the_call.should_eval() = true;
+      return the_call;
+    }
+
     if (peek< functional >())
     { return parse_function_call(); }
 
@@ -1197,4 +1208,4 @@ namespace Sass {
     return result;
   }
   
-}
+}
\ No newline at end of file

eval_apply.cpp

@@ -2,6 +2,7 @@
 #include "eval_apply.hpp"
 #include "document.hpp"
 #include "error.hpp"
+#include <cctype>
 #include <iostream>
 #include <sstream>
 #include <cstdlib>
@@ -19,7 +20,7 @@ namespace Sass {
 
   // Evaluate the parse tree in-place (mostly). Most nodes will be left alone.
 
-  Node eval(Node expr, Node prefix, Environment& env, map<string, Function>& f_env, Node_Factory& new_Node, Context& ctx)
+  Node eval(Node expr, Node prefix, Environment& env, map<string, Function>& f_env, Node_Factory& new_Node, Context& ctx, bool function_name)
   {
     switch (expr.type())
     {
@@ -287,12 +288,22 @@ namespace Sass {
         if (!env.query(expr.token())) throw_eval_error("reference to unbound variable " + expr.token().to_string(), expr.path(), expr.line());
         return env[expr.token()];
       } break;
+
+      case Node::image_url: {
+        Node base(eval(expr[0], prefix, env, f_env, new_Node, ctx));
+        Node prefix(new_Node(Node::identifier, base.path(), base.line(), Token::make(ctx.image_path)));
+        Node fullpath(new_Node(Node::concatenation, base.path(), base.line(), 2));
+        Node url(new_Node(Node::uri, base.path(), base.line(), 1));
+        fullpath << prefix << base;
+        url << fullpath;
+        return url;
+      } break;
       
       case Node::function_call: {
         // TO DO: default-constructed Function should be a generic callback (maybe)
 
         // eval the function name in case it's interpolated
-        expr[0] = eval(expr[0], prefix, env, f_env, new_Node, ctx);
+        expr[0] = eval(expr[0], prefix, env, f_env, new_Node, ctx, true);
         string name(expr[0].to_string());
         if (!f_env.count(name)) {
           // no definition available; just pass it through (with evaluated args)
@@ -337,6 +348,17 @@ namespace Sass {
           return expr;
         }
       } break;
+
+      case Node::identifier: {
+        string id_str(expr.to_string());
+        to_lowercase(id_str);
+        if (!function_name && ctx.color_names_to_values.count(id_str)) {
+          return ctx.color_names_to_values[id_str];
+        }
+        else {
+          return expr;
+        }
+      } break;
       
       case Node::string_schema:
       case Node::value_schema:
@@ -1258,4 +1280,7 @@ namespace Sass {
   Node selector_butlast(Node sel, Node_Factory& new_Node)
   { return selector_but(sel, new_Node, 0, 1); }
 
+  void to_lowercase(string& s)
+  { for (size_t i = 0, L = s.length(); i < L; ++i) s[i] = tolower(s[i]); }
+
 }

eval_apply.hpp

@@ -11,7 +11,7 @@
 namespace Sass {
   using std::map;
   
-  Node eval(Node expr, Node prefix, Environment& env, map<string, Function>& f_env, Node_Factory& new_Node, Context& ctx);
+  Node eval(Node expr, Node prefix, Environment& env, map<string, Function>& f_env, Node_Factory& new_Node, Context& ctx, bool function_name = false);
   Node function_eval(string name, Node stm, Environment& bindings, Node_Factory& new_Node, Context& ctx, bool toplevel = false);
   Node accumulate(Node::Type op, Node acc, Node rhs, Node_Factory& new_Node);
   double operate(Node::Type op, double lhs, double rhs);
@@ -29,4 +29,5 @@ namespace Sass {
   Node selector_butfirst(Node sel, Node_Factory& new_Node);
   Node selector_butlast(Node sel, Node_Factory& new_Node);
 
+  void to_lowercase(string& s);
 }
\ No newline at end of file

functions.hpp

@@ -199,6 +199,9 @@ namespace Sass {
     extern Function_Descriptor not_descriptor;
     Node not_impl(const Node parameters, map<Token, Node>& bindings, Node_Factory& new_Node);
 
+    extern Function_Descriptor if_descriptor;
+    Node if_impl(const Node parameters, map<Token, Node>& bindings, Node_Factory& new_Node);
+
   }
   
 }

node.hpp

@@ -128,6 +128,7 @@ namespace Sass {
       value,
       identifier,
       uri,
+      image_url,
       textual_percentage,
       textual_dimension,
       textual_number,
@@ -182,8 +183,8 @@ namespace Sass {
     bool has_backref() const;
     bool from_variable() const;
     bool& should_eval() const;
-    bool& is_unquoted() const;
-    bool& is_quoted() const;
+    bool& is_unquoted() const; // for strings
+    bool& is_quoted() const;   // for identifiers
     bool is_numeric() const;
     bool is_guarded() const;
     bool& has_been_extended() const;

node_emitters.cpp

@@ -268,7 +268,8 @@ namespace Sass {
       
       case uri: {
         string result("url(");
-        result += token().to_string();
+        // result += token().to_string();
+        result += at(0).to_string();
         result += ")";
         return result;
       } break;

prelexer.cpp

@@ -278,6 +278,11 @@ namespace Sass {
                        optional<spaces>,
                        exactly<')'> >(src);
     }
+    // Match SCSS image-url function
+    extern const char image_url_kwd[] = "image-url(";
+    const char* image_url_prefix(const char* src) {
+      return exactly<image_url_kwd>(src);
+    }
     // Match CSS "!important" keyword.
     extern const char important_kwd[] = "important";
     const char* important(const char* src) {

prelexer.hpp

@@ -354,6 +354,8 @@ namespace Sass {
     // Match CSS uri specifiers.
     const char* uri_prefix(const char* src);
     const char* uri(const char* src);
+    // Match SCSS image-url function.
+    const char* image_url_prefix(const char* src);
     // Match CSS "!important" keyword.
     const char* important(const char* src);
     // Match Sass "!default" keyword.

sass_interface.cpp

@@ -13,7 +13,7 @@ extern "C" {
   using namespace std;
 
   sass_context* sass_new_context()
-    { return (sass_context*) calloc(1, sizeof(sass_context)); }
+  { return (sass_context*) calloc(1, sizeof(sass_context)); }
   
   void sass_free_context(sass_context* ctx)
   { 
@@ -24,7 +24,7 @@ extern "C" {
   }
 
   sass_file_context* sass_new_file_context()
-    { return (sass_file_context*) calloc(1, sizeof(sass_file_context)); }
+  { return (sass_file_context*) calloc(1, sizeof(sass_file_context)); }
   
   void sass_free_file_context(sass_file_context* ctx)
   { 
@@ -58,7 +58,8 @@ extern "C" {
   {
     using namespace Sass;
     try {
-      Context cpp_ctx(c_ctx->options.include_paths);
+      Context cpp_ctx(c_ctx->options.include_paths, c_ctx->options.image_path);
+      // cpp_ctx.image_path = c_ctx->options.image_path;
       // Document doc(0, c_ctx->input_string, cpp_ctx);
       Document doc(Document::make_from_source_chars(cpp_ctx, c_ctx->source_string));
       c_ctx->output_string = process_document(doc, c_ctx->options.output_style);
@@ -93,8 +94,11 @@ extern "C" {
   {
     using namespace Sass;
     try {
-      Context cpp_ctx(c_ctx->options.include_paths);
+      Context cpp_ctx(c_ctx->options.include_paths, c_ctx->options.image_path);
       // Document doc(c_ctx->input_path, 0, cpp_ctx);
+      // string path_string(c_ctx->options.image_path);
+      // path_string = "'" + path_string + "/";
+      // cpp_ctx.image_path = c_ctx->options.image_path;
       Document doc(Document::make_from_file(cpp_ctx, string(c_ctx->input_path)));
       // cerr << "MADE A DOC AND CONTEXT OBJ" << endl;
       // cerr << "REGISTRY: " << doc.context.registry.size() << endl;

sass_interface.h

@@ -10,6 +10,7 @@ extern "C" {
 struct sass_options {
   int output_style;
   char* include_paths;
+  char* image_path;
 };
 
 struct sass_context {